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helpmexoxo

  • 3 years ago

A firecracker shoots up from a hill 150 feet high with an initial speed of 95 feet per second. Using the formula H(t) = −16t2 + vt + s, determine how long it will take the firecracker to hit the ground.

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  1. NotTim
    • 3 years ago
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    1. Let's draw a diagram. 2. LEt's make a variables list 3 Find der formulas tu need!

  2. NotTim
    • 3 years ago
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    4. Solve it! remember which formulas need to be 'combined'!

  3. Romero
    • 3 years ago
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    Do you just want the answer?

  4. NotTim
    • 3 years ago
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    blue bird! go back to your other question! THIS MA TOWN!

  5. NotTim
    • 3 years ago
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    oooh wait. this aint physics...

  6. helpmexoxo
    • 3 years ago
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    How would i make a variables list?

  7. NotTim
    • 3 years ago
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    you just need to find the end points!

  8. helpmexoxo
    • 3 years ago
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    I'm confused :o

  9. helpmexoxo
    • 3 years ago
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    I thought you only plug in the numbers to the equation but i'm unsure if that's correct or how to do it even if it is correct

  10. NotTim
    • 3 years ago
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    v=95 ft/s H(t)=150

  11. NotTim
    • 3 years ago
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    solve for s!

  12. NotTim
    • 3 years ago
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    wait...what's s? solve for t, silly me

  13. helpmexoxo
    • 3 years ago
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    ok but there is also a s!?

  14. helpmexoxo
    • 3 years ago
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    I tried to solve but i'm soooo confused

  15. lgbasallote
    • 3 years ago
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    let H(t) = 0 then solve for t

  16. NotTim
    • 3 years ago
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    really? shoot. I suck at even trinomials now huh

  17. NotTim
    • 3 years ago
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    maybe s is given elsewhere in your textbook

  18. helpmexoxo
    • 3 years ago
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    no it isn't :o

  19. helpmexoxo
    • 3 years ago
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    @Romero yes please can i have the answer

  20. NotTim
    • 3 years ago
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    @lgbasallote wat is s?

  21. lgbasallote
    • 3 years ago
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    i'd like to say it's the distance traveled

  22. helpmexoxo
    • 3 years ago
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    Is the answer 7.2 seconds?

  23. NotTim
    • 3 years ago
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    dunno. doesnt your txtbook ahve the answer?

  24. helpmexoxo
    • 3 years ago
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    no @lgbasallote is the answe 7.2s ?!

  25. helpmexoxo
    • 3 years ago
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    i'm doing an online course not from a textbook!

  26. lgbasallote
    • 3 years ago
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    lol shouldnt @NotTim be answering this o.O wait..ill check

  27. NotTim
    • 3 years ago
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    i dont wanna do math...

  28. lgbasallote
    • 3 years ago
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    it;s what my calculator said

  29. helpmexoxo
    • 3 years ago
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    ok thank you all :)

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